I2C Driver. More...

#include <bsp/irq.h>
#include <bsp/raspberrypi-i2c.h>
#include <bsp/raspberrypi.h>
#include <bsp/rpi-gpio.h>
#include <dev/i2c/i2c.h>

Macros
#define	C_REG(bus) BCM2835_REG( ( bus )->base_address + BCM2711_I2C_CONTROL )

#define	C_I2CEN ( 1 << 15 )

#define	C_INTR ( 1 << 10 )

#define	C_INTT ( 1 << 9 )

#define	C_INTD ( 1 << 8 )

#define	C_ST ( 1 << 7 )

#define	C_CLEAR ( 1 << 5 )

#define	C_READ ( 1 << 0 )

#define	BSC_CORE_CLK_HZ 150000000

#define	S_REG(bus) BCM2835_REG( ( bus )->base_address + BCM2711_I2C_STATUS )

#define	S_CLKT ( 1 << 9 )

#define	S_ERR ( 1 << 8 )

#define	S_RXF ( 1 << 7 )

#define	S_TXE ( 1 << 6 )

#define	S_RXD ( 1 << 5 )

#define	S_TXD ( 1 << 4 )

#define	S_RXR ( 1 << 3 )

#define	S_TXW ( 1 << 2 )

#define	S_DONE ( 1 << 1 )

#define	S_TA ( 1 << 0 )

#define	S_ERROR ( S_CLKT \| S_ERR \| S_DONE )

Functions
rtems_status_code	rpi_i2c_init (raspberrypi_bsc_masters device, uint32_t bus_clock)
	Initialize the I2C bus for a specified master.

Detailed Description

I2C Driver.

Function Documentation

Initialize the I2C bus for a specified master.

Parameters

device	The BSC master to initialize.
bus_clock	The desired bus clock frequency in Hz.